On the north side of 4th Avenue between Broadway and Spring, World War II barracks can be seen. They commemorate the U.S. Army's "invasion" of Skagway from 1942-46. These engineers and construction men were largely responsible for supplying the crew building the Alcan Highway and the extensive Canol oil pipeline. At one time, more than 80 of these barracks were scattered around town; fewer than 10 remain.